51猎奇入口

\(\renewcommand{\mybuildpath}{./} \renewcommand{\labelitemi}{\scriptsize$\blacktriangleright$} \def\ds{\displaystyle} \def\R{\mathbb{R}} \def\arraystretch{2.5} \renewcommand{\Heq}{\overset{H}{=}} \renewcommand{\vect}{\textbf} \renewcommand{\longvect}{\overrightarrow} \newcommand{\diff}[2]{\dfrac{d#1}{d#2}} \newcommand{\diffp}[2]{\dfrac{\partial#1}{\partial#2}} \newcommand{\lt}{<} \newcommand{\gt}{>} \newcommand{\amp}{&} \)